南京林业大学学报(自然科学版) ›› 2013, Vol. 37 ›› Issue (05): 113-118.doi: 10.3969/j.issn.1000-2006.2013.05.022

• 研究论文 • 上一篇    下一篇

鹅掌楸属3个树种次生韧皮部显微构造的比较

王丰,潘彪*,李伊乐,伊东隆夫   

  1. 南京林业大学材料科学与工程学院,江苏南京210037
  • 出版日期:2013-10-18 发布日期:2013-10-18
  • 基金资助:
    收稿日期:2012-11-13修回日期:2013-06-16 基金项目:江苏高校优势学科建设工程资助项目(PAPD) 第一作者:王丰,本科生。 *通信作者:潘彪,教授。 Email: pan.biao@163.com。 引文格式:王丰,潘彪,李伊乐,等. 鹅掌楸属3个树种次生韧皮部显微构造的比较[J]. 南京林业大学学报:自然科学版,2013,37(5):113-118.

Comparison of microstructure of secondary phloem in Liriodendron

WANG Feng, PAN Biao*, LI Yile, Takao ITOH   

  1. College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,China
  • Online:2013-10-18 Published:2013-10-18

摘要: 在光学显微镜下对鹅掌楸属(Liriodendron)北美鹅掌楸、中国鹅掌楸和杂交鹅掌楸3个树种的次生韧皮部显微构造进行了比较研究。结果表明:鹅掌楸属3个树种的次生韧皮部纤维长度、纤维组织比量、筛管复筛板横隔数、油细胞组织比量、韧皮射线的高度和宽度等方面均存在一定差异。与杂交鹅掌楸和中国鹅掌楸相比,北美鹅掌楸有更长的筛管长度、薄壁细胞束长度和更大的纤维组织比量及油细胞组织比量。复筛板横隔数差异显示了中国鹅掌楸韧皮部系统进化程度较北美鹅掌楸高。由于外侧韧皮部射线弦向宽度显著增加,推测3种鹅掌楸外侧韧皮部的部分射线薄壁细胞仍具有垂周分裂能力。

Abstract: The secondary phloem structure among three species in Liriodendron (Liriodendron chinensis,L. tulipifera and L. chinensis×tulipifera)was studied. There were obvious differences in terms of length and tissue proportion of phloem fiber, number of sieve plate bar tissue proportion of oil cell and the size of phloem ray. Compared with L. chinensis×tulipifera and L. chinensis, L. tulipifera had longer sievetube element and parenchyma strand. The larger tissue proportion in fiber and oil cell. L. tulipifera was more original while L. chinensis was more evolutionary advanced in terms of compound sieve plate bar number. It suggested that phloem ray parenchyma cell has anticlinal division ability due to the increasing of tangential size of some rays near the outbark in the phloem.

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